Thanks for the info.
I am definitely going to go. We were actually going with a larger group of people, but all of the cabins were booked separately (each family, couple, etc. booked their own). So I will thankfully not be by myself on the cruise, but I will have a cabin to myself now.
Actually, I just thought of something else too...I booked the room for two guests, but I had not yet filled in my roommate's information. I was going to do that when I made the final payment. So the booking has my name and "Guest 2" at the moment. So if I just leave him on to be a no-show, I guess I will have to fill in his information anyway, right? Or at least someone's info...not necessarily his, since they won't actually be there?